Mark and Elizabeth squabble after he disagrees with her treatment of his father. Carter gets in trouble when a patient of his that he had discharged for insurance reasons comes back into the hospital near death.

Lucy desperately tries to find a way for a young woman to receive a new heart in order to stay alive, going as far as going to Romano's house in the middle of the night to find the only doctor qualified to perform the surgery.

Greene searches for his father, who is supposed to have arrived from San Diego earlier in the day. Corday crosses ethical lines to save the life of a rapist while Kovac and Weaver work feverishly to save the woman he raped.